Hey all. The mower on my new Broadmoor 22/44 changed its tune while mowing last week, literally. As I was edging along my driveway, the mower changed its quiet and muffled higher-pitched sound to a louder, husky, low and grovely sound. It still works fine, no performance issues and no noticeable loss of power. I have since removed the deck twice and cleaned underneath. I can confirm that it is the deck, and not the engine, that is making the noise. I do not use any attachments or a mulch plug. But the new sound almost makes me think that something fell off that was previously buffering the sound. Any thoughts?